基于流体分析的发酵釜搅拌器强度计算

大型搅拌釜的搅拌器强度计算难度较大,且高黏流体介质的搅拌功率和搅拌效果难以预测。针对大型发酵釜的搅拌器设计问题,采用CFD和FEA技术相结合的方法,对发酵釜的搅拌效果和搅拌器强度进行了分析和预测,结果表明,该分析方法考虑了搅拌器工作过程中流体压力对叶片的作用,对大型搅拌器,尤其是搅拌介质为高黏流体的搅拌器强度校核和功率预测能够获得较为准确的结果,同时可获得详细的流场信息及各项特性参数。该分析方法可为大型搅拌器的设计和优化提供参考。

Fermentation Tank Agitator Strength Calculation Based on the Fluid Analysis

Large stirred tank agitator strength calculation is difficult, and viscous fluid medium stirring power and stirring effect is difficult to predict. For large fermentation tank agitator design problem, this paper adopted the method of combining the CFD and FEA technology, mixing effect of fermentation tank and the agitator strength were analyzed and predicted, the results showed that the analysis method considering the fluid pressure effect on the blade in the working process. For large mixer, especially the mixing of medium intensity and power of agitator for viscous fluid prediction could get more accurate results, the detailed flow field information and the feature parameters could be obtained at the same time. This analysis method can provide reference for design and optimization of large mixer.